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jmlloren

Cheap and easy-to-make perovskite films rival silicon for efficiency. - 11 views

I just wanted to put another paper in this context: http://science.sciencemag.org/content/324/5923/63.short Solar cells based on Oxides, in particular BiFeO3. The key point here, is that while hali...

solar cells technology

started by fichbio on 09 Mar 16 1 follow-up, last by jmlloren on 11 Mar 16
jcunha liked it
Luke O'Connor

Trajectory of a falling Batman - 2 views

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    The film Batman Begins shows the character of Batman gliding using a rigid form of his cape. This paper assesses the feasibility of such a glide and fi nds that while a reasonable distance could be travelled if gliding from a tall building, the speed at which Batman would be travelling would be too dangerous to stop without some method of slowing down.
LeopoldS

Erdős-Bacon number - Wikipedia, the free encyclopedia - 2 views

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    ever heard of the Erdős-Bacon number? :-)
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    There is a tool (http://www.ams.org/mathscinet/collaborationDistance.html) which computes your Erdös number. But who cares about Kevin Bacon?
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    and actors probably ask who cares about Erdős :) The network of actors who co-star in movies is a famous one among networks people. Kevin Bacon became famous in that network because of fans of his who could from memory trace the paths of a large number of actors back to him :) see: http://en.wikipedia.org/wiki/Six_Degrees_of_Kevin_Bacon#History If you have you publications in http://academic.research.microsoft.com/, it gives you a nice tool to visualize your graph up to Erdős. Apparently I have a path of length 4, and several of length 5: http://academic.research.microsoft.com/VisualExplorer#36695545&1112639
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    and for the actors http://oracleofbacon.org/
dejanpetkow

3D Holographic Power Point Presentation at ASE 2013 - 1 views

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    THIS is how the ACT should give its science coffees, and I am not referring to the fat stage or the guy's dress. Next time I'm attending this traditional ACT exercise I expect such a show!
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    Thats pretty cool indeed! I am for it in the next budget run! :) However, its technically not holographic though as this looks like a projection on Mylar film at 45 degrees from a bottom projector. It looks 3D and holographic as the background is transparent.
Ma Ru

F9R First Flight Test - 3 views

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    In case you have not seen this one yet...
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    Nice one, very impressive (also filming it with a drone :)! I noticed at 0:56 that the exhaust flames do travel upwards on the descent. I wonder how much of a problem this would be for the actual reusability / next flight approval?
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    impressive!
Thijs Versloot

Awesome example of #tilt-shift video - 2 views

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    A must see video, very surreal filming technique and especially around 1.36 is hilarious
johannessimon81

3D-printing synthetic tissues - 0 views

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    "The new type of material consists of tens of thousands of picoliter connected water droplets encapsulated within lipid films, which can perform some of the functions of the cells inside our bodies."
Thijs Versloot

Electromagnetism generated by symmetry breaking in dielectrics - 0 views

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    Using dielectric materials as efficient EM radiators and receivers can scale down these antenna's to the chip level, reducing both weight and power consumption. The infamous internet-of-things one step closer. But could we also transmit power this way?? "In dielectric aerials, the medium has high permittivity, meaning that the velocity of the radio wave decreases as it enters the medium," said Dr Dhiraj Sinha, the paper's lead author. "What hasn't been known is how the dielectric medium results in emission of electromagnetic waves. This mystery has puzzled scientists and engineers for more than 60 years." The researchers determined that the reason for this phenomenon is due to symmetry breaking of the electric field associated with the electron acceleration The researchers found that by subjecting the piezoelectric thin films to an asymmetric excitation, the symmetry of the system is similarly broken, resulting in a corresponding symmetry breaking of the electric field, and the generation of electromagnetic radiation.
duncan barker

World Mysteries - Strange Artifacts, Baghdad Battery - 1 views

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    read this
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    " However, Dr. Konig also found copper vases plated with silver in the Baghdad Museum, excavated from !!!Sumerian!!! sites in southern Iraq, dating back to at least 2500 BCE. When the vases were lightly tapped, a blue patina or film separated from the surface, which is characteristic of silver electroplated onto copper base. It would appear then that the Parthians inherited their batteries from one of the earliest known civilizations." ... they just mistyped the name ...
nikolas smyrlakis

James Cameron's New 3-D Epic Could Change Film Forever | Magazine - 0 views

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    ACT cinema? a bit long article but interesting
pacome delva

The Mysterious Molasses Markings of Pluto - 0 views

  • Pluto can get so cold, researchers believe, that its atmosphere can actually freeze and fall to the ground. If Earth's atmosphere did that, it would make a layer 30 feet thick, but Pluto has less to work with. When it’s on the ground, Pluto's entire blanket of air is no more than a frosty film of nitrogen and methane.
LeopoldS

Quadruple rainbow' caught on film for the first time - 1 views

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    Reminder of physics classes ...
ESA ACT

Large-scale pattern growth of graphene films for stretchable transparent electrodes : A... - 0 views

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    wow ... look at this!
pacome delva

A Physics Paradox: Holes That Block Light -- Fox 2009 (1113): 3 -- ScienceNOW - 0 views

  • Make holes in a film of gold so thin that it's already semitransparent, and less light gets through.
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    A good example of "Can we use it for space.com"... For shielding of course !
LeopoldS

Two- and three-dimensional folding of thin film single-crystalline silicon for photovol... - 0 views

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    very nice approach ...
annaheffernan

Black-hole mergers cast kaleidoscope of shadows - 6 views

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    In Interstellar, the science-fiction film out this week, Matthew McConaughey stars as an astronaut contending with a supermassive black hole called Gargantua. The film's special effects have been hailed as the most realistic depiction ever made of this type of cosmic object. But astrophysicists have now gone one better - this is a really cool visualisation done by researchers in Cornell.
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    Wow, impressive! Simulating eXtreme Spacetimes (SXS) software, very quick merging process though 17ms.. Observable?
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    Mind-blowing!
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